Recovering of superconductivity in S/F bilayers under spin-dependent nonequilibrium quasiparticle distribution

I. V. Bobkova; A. M. Bobkov

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arXiv · 1412.6846

Recovering of superconductivity in S/F bilayers under spin-dependent nonequilibrium quasiparticle distribution

I. V. Bobkova·A. M. Bobkov

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Abstract

We study theoretically the influence of spin accumulation on superconductivity in a superconductor/ferromagnet bilayer. It is well-known that the superconductivity in S/F bilayers is suppressed by the proximity to a ferromagnet. The spin accumulation by itself is also a depairing factor. But here we show that creation of the spin accumulation on top of effective exchange depairing, caused by the proximity to a ferromagnet, can lead to an opposite result. The superconductivity can be partially recovered by spin-dependent quasiparticle distribution. The systems with realistic parameters are considered and the possible experimental setup is proposed.

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I. V. Bobkova, A. M. Bobkov. 2014-12-21. Recovering of superconductivity in S/F bilayers under spin-dependent nonequilibrium quasiparticle distribution. https://arxiv.org/abs/1412.6846

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